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Some animals and insects(昆虫)use camouflage that is, they change color so that it is the same as the color of the tree or plant on which they are sitting. Others have developed a color thousands of years which is like the color of their living place.
One of the second kind is the Peppered Moth, which is found in England. It is light brown in color, and likes to rest on trees which are also light brown. This makes the moth difficult to be seen. It means that birds are less likely to see it and eat it.
But, about sixty years ago, smoke from factories began to reach some of the trees where the moth rested. It made the trees blacker. This meant that the moth become easier to see.
1.The word “camouflage” in the first sentence means ____.
[ ]
A.he same color
B.the tree on which insects are sitting
C.making it difficult to see something
D.color is d\always changing
2.The Peppered Moth likes to rest on trees which are light brown in order ____.
[ ]
A.not to be eaten by birds
B.not to be seen by other insects
C.to change its color
D.to be see by birds
3.Mother became easier to see because ________ .
[ ]
A.the moth changed its color
B.trees became blacker after 60 years
C.smoke from factories could lighten the color of the moth
D.smoke from factories mad the trees darker
4.It seems that ____.
[ ]
A.the moth always has the same color as the color of the trees
B.the moth is able to develop its color over years
C.people like the moth found in England
D.the Peppered Moth is being experimented
5.What do you think would probably happen?
[ ]
A.The peppered Moth would become darker year by year.
B.Te Peppered moth would change its color once.
C.The Peppered Moth would die out.
D.The Peppered Moth would be eaten by birds.
查看习题详情和答案>>Many people say pennies are not worth saving. After all, a penny is only worth a cent. But one unusual penny turned out to be worth a lot more when a coin collector paid $1.7 million for it earlier this month.
The coin is one of a kind. It is the only penny that the Denver mint(铸币厂) made out of copper, instead of steel, in 1943. Because it is unique, it is also very valuable. No penny has ever sold for so much money.
The Changing Penny
The Lincoln penny first appeared in 1909. For 34 years, the one-cent coin was made out of copper. Then, in 1943, the penny changed. World War II was going on, and copper was needed for equipment. So for one year, pennies were made out of steel instead. At least most of them were.
Only a few coins were made out of unused copper. There are three main mints, or places where coins are made, in the United States. Of the known copper pennies from 1943, twelve were made in the Philadephia mint, and five were made in the San Francisco mint. Only one was made in the Denver mint.
Nobody knows for sure why a copper penny was made at the Denver mint in 1943, coin dealers Andy Skrabalak told Time for Kids. “There is a rumor that a mint employee made the coin in the middle of the night.”
A Special Set
The coin collector who bought the $1.7 million penny wants to remain unknown. But the reason for the trade is known. He already had two copper pennies from 1943 – one from the San Francisco mint and one from the Philadephia mint. To complete the set, he needed the Denver penny. The three coins will go on display at a coin exhibition in Tampa, Florida.
The collector who sold the penny is also keeping his name a secret. It took four years to convince him to give up the rare coin. Now that he has finally donating all of the money to charity.
【小题1】Why is the Lincoln penny worth over one million dollars?
A.Because it has a history of thirty-four years. |
B.Because it was made out of a rare material. |
C.Because it was made on one night of 1943 by the Denver mint. |
D.Because it was the only coin Denver mint made out of copper in 1943. |
A.were worth collecting for selling later |
B.were surely valuable if not made out of steel |
C.wouldn’t be sold for large amounts of money |
D.were only useful for some coin museums |
A.Five | B.Twelve | C.Seventeen | D.Eighteen |
A.He already had two copper pennies from 1943. |
B.He wanted to complete the set of copper pennies. |
C.He didn’t want to sell his penny in the beginning. |
D.He was a well-known coin dealer in Tampa, Horida. |
As the pace of life continues to increase, we are fast losing the art of relaxation. Once you are in the habit of rushing through lift, being on the go from morning till night, it is hard to slow down. But relaxation is essential for a healthy mind and body.
Stress is a natural part of everyday life and there is no way to avoid it. In fact, it is not the bad thing it is often supposed to be. A certain amount of stress is vital to provide motivation and give purpose to life. It is only when the stress gets out of control that it can lead to poor performance and ill health.
The amount of stress a person can withstand depends very much on the individual. Some people are not afraid of stress, and such characters are obviously prime material for managerial responsibilities. Others lose heart at the first signs of unusual difficulties. When exposed to stress, in whatever form, we react both chemically and physically. In fact we make choice between "fight" or "flight" and in more primitive days the choice made the difference between life or death. The crises we meet today are unlikely to be so extreme, but however little the stress is, it involves the same response. It is when such a reaction lasts long, through continued exposure to stress, that health becomes endangered. Such serious conditions as high blood pressure and heart disease have established links with stress. Since we cannot remove stress from our lives (it would be unwise to do so even if we could), we need to find ways to deal with it.
People are finding less and less time for relaxing themselves because_____.
A. they do not know how to enjoy themselves
B. they do not believe that relaxation is important for health C. they are travelling fast all the time
D. they are becoming busier with their work
According to the writer, the most important character for a good manager is his ________.
A. not fearing stress B. knowing the art of relaxation
C. high sense of responsibility D. having control over performance
Which of the following statements is true?
A. We can find some ways to avoid stress.
B. Stress is always harmful to people.
C. It is easy to change the habit of keeping oneself busy with work.
D. Different people can withstand different amounts of stress.
In Paragraph 3, "such a reaction" refers back to_______.
A. "making a choice between 'flight' or 'fight'"
B. "reaction to stress both chemically and physically"
C. "responding to crises quickly"
D. "losing heart at the signs difficulties"
In the last sentence of the passage, "do so " refers to ______.
A. "expose ourselves to stress"
B. "find ways to deal with stress"
C. "remove stress from our lives"
D. "established links between diseases and stress"
查看习题详情和答案>>A man was on the side of the road hitchhiking(搭便车)on a very dark night in the middle of a terrible rainstorm, with no cars on the road.The storm was so strong that the man could hardly see a few feet ahead of him.Suddenly, he saw a car come towards him and stop.The man, without thinking about it, got in the car and closed the door and only then did he realize that there was nobody behind the steering wheel(方向盘)!
The car started to move very slowly.The man looked at the road and saw a curve (拐弯处)coming his way.Terrified, he started to pray, begging for his life.He had not come out of shock when, just before the car hit the curve, a hand suddenly appeared through the window and moved the wheel.The man, paralyzed with fear, watched how the hand appeared every time the car was drawing near a curve.Finally, although terrified, the man managed to open the door and jump out of the spooky car.Without looking back, the man ran through the storm all the way to the nearest town.In a state of complete horror, the man walked into a nearby bar and asked for two glasses of Scotch whisky.
Then, still shaking with fright, he started telling everybody in the bar about the horrible experience he just went through in the spooky car.Everyone in the bar listened in silence and became frightened, with hair standing on end, when they realized the man was telling the truth because he was crying and he was certainly not drunk!
About half an hour later, two other young men walked into the same bar and one said to the other, “Hey, there’s a stupid man who jumped into the car while we were pushing it!”
【小题1】When the car was first drawing near a curve, the man ________.
A.felt very curious | B.was extremely frightened |
C.cried for help | D.remained as calm as possible |
A.His reasonable behavior. | B.His vivid description. |
C.His plain appearance. | D.His honest attitude. |
A.it is unsafe for people to take a free ride |
B.the man was telling a lie to his listeners |
C.the car probably broke down on the way |
D.the two young men were familiar with the man |
Singing had always been an important part of Gloria Estefan’s life. “Since I was three years old, I sang. I sang everything,” Gloria said. “Cubans,” she added, “are a musical people”.
Gloria was born in Cuba in 1957. Her family left the country just before Fidel Castro came to power. In Miami, where the family settled, many people did not accept Cuban immigrants. In first grade, she spoke little English, but she worked hard to learn the language. Six months after she entered school, she won an award for reading in English!
When Gloria was ten, her father returned from the Vietnam War. Soon, the family realized he wasn’t well. They soon found out that he was badly ill. Her mother went back to teaching at school to support the family. Gloria cared for her father and her younger sister.
She still made the honor roll, and she still had her music, but Gloria was lonely. However, when the band leader Emilio Estefan came to speak at her high school, Gloria sang for him. He asked her to join his band. It was the beginning of the Miami Sound Machine.
Within a few months, the Miami Sound Machine was the top band in Miami. In 1978 Gloria and Emilio married.
At first, the Miami Sound Machine was known only in Miami. Then the band signed with CBS Records. Estefan and his band became stars.
Since then, the Miami Sound Machine has sold millions of records. Gloria has done more than just singing when Hurricane Andrew hit central Florida in 1992. She used only two weeks to organize an all-star concert that raised $2 million for the people who suffered in the hurricane. “We needed a party after that disaster,” she said.
Gloria said, “You have to stay true to the music you really love to do. There will always be people who will tell you, ‘that won’t work.’ You’ve got to be firm in spite of difficulties. Stick to it—that’s the main thing.”
【小题1】Gloria’s father was ill_________.
A.when they settled down in Miami. |
B.before they left their home country |
C.after he returned from Vietnam War |
D.as soon as she finished high school |
A.organizing an all-star concert for Hurricane victims |
B.winning an award for reading in English |
C.teaching at school to support the family |
D.taking care of her father and sister |
A.the concert | B.the celebration | C.the victims | D.the hurricane |